John c



( o MudeL) J. 0. GILBERT. SPINNING ING.

No. 598,200. Patented Feb. 1, 1898 m: nonms PETERS cu. PHOTO-LIYHQ.WASHINGTON 1:. (L

Im; STATES ATENT Oiuuon.

JOHN G. GILBERT, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO EDMUND V L.PARKER, OF SAME PLACE.

SPINNING-i-HNG.

SPECIFICATION formingpart of Letters Patent No. 598,200, dated February1, 1898.

Application filed April 26, 1897.

To all whom it may concern.-

Be it known that I, JOHN C. GILBERT, a citizen of the United States,residing at Worcester, in the county of Worcester and State ofMassachusetts, have invented a new and use-,

ful Spinning-Ring, of which the following, together with theaccompanying drawings, is a specification sufficiently full, clear, andexact to enable persons skilled in the art to which this inventionappertains to make and use the same.

The prime objectof myinvention is to produce a strong, inexpensive, andmore desirable and efficient sheet-metal spinning-ring for continuousspinning or twisting machines.

Another object is the construction of a sheet-metal spinning-ring with adouble-folded flanged top rim in which the edge joint of the metal isdisposed with an inward fold and abutting against the shoulder at theouter side of the ring, where it will not be chafed I drawings, whereinFigure 1 shows a perspective view of my improved spinning-ring, also anenlarged sec-,

tion at line X X. Fig. 2 shows a plan, onehalf bottom view, and one-halfhorizontal section, looking upward. Figs. 3 to 9, inclusive, illustratethe shapes of the material at various stages in the process of formationof the Serial No. 633,859. (No model.)

firmly and flatly against the splayed or out wardly-inclined web portionof the ring, as shown, thus providing a continuous smooth and perfectnarrow rounded edge at 7 and a double ply or reinforced footing-rim 0about the bottom of the ring, which is thus ren dered not liable tocheck in hardening nor to become cracked or injured when forcing thering into its holder or by upsetting the lips of the holder against thefoot of the ring.

The reinforce G is in the present instance and preferably folded inwardand laid against the inner surface of the web A, but can, if in anyinstance preferred, be folded against the exterior of the web, and Idesire to include such structure as within the scope of my invention. I

The method of forming sheet-metal spinning-rings in accordance with myinvention is as follows: A disk of sheet-steel or other metal ofsuitable thickness. is first passed through suitable drawing-dies andshaped into a plain cylindrical cup A, as Fig. 3, approximately of thediameter required for the body of the ring. The head of the cup is thencondensed, forming an annular rounded off set or shoulder a. (See Fig.4:.) The rim is then squared off to the proper dimension at line 8, thedisk-head E punched out at line 10, and the top edge squared off at'line 11, leaving sufficient material above the shoulder for forming thehead or traveler guiding rim B of the spinning-ring.

The top edge 6 is, by means of suitable dies, stretched or distended andcurled or rolled outward, as at 35, giving thereto the shapesubstantially as shown in Fig. 5. The next step is to bend inward theextreme edge 6, forcing and crimping it close against the shoulder a atthe exterior of the ring, as in Fig. 6. The head of the ring is thenpressed between flattening-dies, which close the folds and compress theroll 35 into the final shape,

(see Fig. 7,) forming the inwardly-projecting folded flange 3 and theoutwardly-projecting folded flange 5 on the upper portion of thecircular Web A, the meeting joint 6 at the edge of the sheet metal beingon the outside of the ring close in the neckand abutting against andsupported by the shoulder or inward bend a of the web metal where itmerges into the inward flange or fold, as more clearly shown in Figs. 1and 10. This mannerof forming the head of a sheet-metal spinningring isa feature of my invention.

For producing the bottom part or foot of the ring the lower part isswaged in suitable dies and distended, as at 12, for about onethird ofthe height, more or less, and to a diameter corresponding orapproximating to the required dimension of the finished form, or asshown in Fig. 8. The body portion A by this distention assumes adownwardlyflared form. The lower distended edge is then crimped orturned by appropriate closing-dies into a horizontal flange or to theform indicated at 13 in Fig. 9. By a subsequent operation the flange 13is forced upward and outward and permanently laid and set against thesurface of the body portion, forming the close-folded edge at 7 and thereinforce O at the foot of the ring. The meeting edge m and surfaces arethen smoothed off or buffed to the desired finish and the ringssubsequently case-hardened and polished by usual means. The ring 15 maybe more or less closely compressed, according to the size required. Thering-traveler runs thereon, as

indicated by dotted lines I in Fig. 10, its end 2' clear from the edgejoint 6 of the ring metal. Sheet-metal spinning-rings have heretoforebeen produced of different formation, and I do not, therefore, broadlyclaim a sheet-metal spinning-ring irrespective of its structure.

What I claim, and desire to secure by Letters Patent, is

1. A spinning-ring formed of thin metal and having a folded top rimcomprising an inwardly-projecting folded flange, and anoutwardlyprojecting underfolded flange in which the under fold of themetal is returned inward to the web, with the edge joint dis posed atthe exterior of the ring and inwardly abutting against theneck-shoulder, substantially as set forth.

2. A sheet-metal spinning-ring having the downwardly-distended bodyportion adapted for support within a lipped plate-holder, and 55provided with a reinforce-fold formed as shown around its edge, whichfits under the holder-lips.

3. A spinning-rim g formed from thin metal, having thedownwardly-splayed ring-body its bottom edge folded inward and laid, asa reinforce, firmly and flatly against the splayed inner face of the Webportion of the ring, substantially as set forth.

4. A spinning-ring made of thin sheet metal and having the flat-toppedtraveler-race rim formed by a double-fold inwardly-projecting flange anda double-fold outwardly-projecting flange with an underfolded edgeabutting against the exterior of the neck-shoulder, the web or ring bodyoutwardly splayed at its base and having its lower edge upturned in aclose fold laid and permanently set flat against the splayed surface ofthe web, for the purpose set forth. 7

Witness my hand this 23d day of April, A. D. 1897.

JOHN C. GILBERT.

Witnesses:

CHAs. H. BURLEIGH, EDMUND L. PARKER.

